Window-sash



H. PI PDRTER.

WINDOW SASH.

APPLICATION FILED DEC. I.I9I9.

Patel-med Aug. M1921.

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H5 P. PORTER. WINDOW SASH.

APPLICATION FILED DEC. I, I9I9.

Patented Aug. 16, H2L

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WlNDOW SASH.

APPLICATION FILED DEC- l, 15H9.

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WINDOW-SASH.

Specification of Letters Patent. Pittgnted Aug., 161, 192L Application led December 1, 1919. Serial No. 341,658.

To all whom t may cof/wem:

Be it known that l, HERMAN P. PORTER, a citizen ,of the United States, residing at Jacksonville, in the county of Duval and State of Florida, have invented certain new and useful Improvements in -Window ication. n

This invention relates to certain new and novel improvements in sliding windowsashes to be used in connection with the standard type of window frames, wherein each sliding sash-frame is provided with an inner sash so connected thereto as to vbe. capable of being swung inward and held in open adjusted position for the purpose of ventilation, easily and readily removed therefrom within the room for the purposel of ventilation and cleaning, and so constructed as to kprevent the entrance of cold air or moisture to the inside ofthe window,- said` invention constituting an improvement on Letters Patent granted to me under date of June 19, 1917, No. 1,230,514.

The main object of this invention is to provide' novel, simple, economical, durable and eicient' window sashes, so constructed that both the upper and the lower inner sash may be swung inward to any suitable or desirable extent and held in such adjusted position without causing a direct draft, and that when the inner sashes are closed they will etfectually prevent the entrance of cold air or moisture to the inside of the window, said inner sashes being removable Another Vobject of the invention is to so construct the windowl sashes that both the upper and lower inner sashes carrying the window pane or panes may be readily removed from the outer sash frames within the room for cleansing, renewal or repair of connections therewith, or the renewal of the glass pane or panes, thereby avoiding` justed position to furnish the desired ventilation for the rooms of. a building during either its occupancy or vacancy. The link system herein shown from'7 to 22, is shown `and described 1n an application tiled by me December 1, 1919, Serial No. 341,659.

Sashes, of which the following is a specif Further objects of the invention are to so construct the inner and outer sashes that they will be substantially weatherproof when 1n closed position; that all tendency to break the windowpanes, when theinner sash is slammed, forcibly closed, or should for any reason be accidentally and rapidly closed from its open adjusted position, will be avoided; and to provide means connected with both sashes whereby when in closed position they will be practically sealed`and safely and securely locked together.

The foregoing and such other objects as may appear' from' the ensuing description are attained by the novel features of construction, arrangement, combination andlocation of parts hereinafter more fully described, illustrated in the accompanying Vdrawings, and particularly pointed out in the claims appended hereto, it being understood that slight changes in theform, proportion, and minor details of the/construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention. t

Reference now bein had to the accompanying drawings whic form a part of this specification and in which similar numerals of reference indicate like parts throughout the several views, it will be seen that Figure 1 is a front elevation of the improved windowsashes and their connections embodying my invention, removed from the window frame.

Fig. 2 is a longitudinal section of the same, showing by dotted lines the inner sash ad'usted to an inward position.

ig. 3 is an enlarged edge View of the inner sash'removed. j

Fig. 4 is an enlarged rear elevation of a portion of the inner sash showing the side frames or rails thereof broken away near the bottom. Y A

Fig. 5 is a detail partly in section, showing the means for locking the upper rail or `frame of both sashes together.

Fig.`6 is a detail plan of the keeper shown insFig. 5. v

j F1 .'.7 is a detail partly in section showing tie means of pivotally locking the lower i portion of the sashes together.

' tion ofthe inner sash showing thev pivoted links for removably connecting the inner and outer sashes together. y

Fig. 11 isA a detail partly yin section of the lower portion of the outer sash showing the position of the keeper secured thereto, and

Fig. 12 is'de'tail in elevation of the outer edge of the lower4 portion of both the inner and outer sash showing them connected together by the pyivoted bolt connection.

In carrying out myA invention as illustrated, the numeral l, designates the lower outer sash frame, and 2 the upper outer sash frame, saidsash frames being fitted so as to freely slide in a window frame of the standard well known construction provided with lthe usual sash weights, cords and pulleys (not showlr), such as are ordinarily employed in connection with sliding sashes.

Each of the outer sash frames is provided along the inner edge of its lower rail with a plurality of beveled faces 3, 4 and 5,v adapted to contact with the complementary beveled edge of the lower rail of the inner sash, and each inner sash frame is provided along lthe Outer edges of its top and side rails with. tsimilar beveled faces 3, 4 and 5 adapted to contact with the complementary beveled inner faces of the top and side rails of the outer sash, said beveled and complementary 4faces coperating to produce a smooth and radual wedging contact, as clearly shownv 1n Figs. 2 and 9. The outer sashframe carries the inner sash frame G-remova'bly and adjustably connected to it so as to be adapted to swing inwardly and be securely fastened thereto.

To each side rail of bothv the upper and lower outer sashes is secured a stationaryy keeper 7, the latter being fixedly connected within a suitable recess, and provided with a plurality of countersunk I openings 8 adapted to receive the heads of the set screw fastenings 9 so that said heads will rest flush with lthe outer surface of the keeper. The folding arms or links 10 andI 11 are connected with said stationary keepers, -the longerarm 10 being permanently secured to the keeper 7,` while the perforated end portion of the shorter arm 11 is pivotally and detachably secured to a pin 12, Xedlysecured to a keeper 13, which is permanently secured, in the manner described with reference to keeper 7, to each side rail of the inner sash, said pin l2 being recessed at let .for the reception of a locking latch 15 pivotally secured to the arm 11. The meeting 4rivet 18 is one end of a flat plate spring19 the outer or other end of the spring being -resiliently secured beneath the head of the rivet 17, said spring exerting sufficient pressure to cause the corrugations and ribs formed on the meeting ends, to interlock witheach other when adjusted to register, and at thesame time permitting the yielding of the jointed ends sufficiently to allow the desired adjustment of the arms for the purpose, as will be readily understood. Each of the keepers 7 and 13 is provided with a flanged portion 20 extending outward from its base member 21, and the upper end of each of the arms lOvand 11 is provided with a curved or cam-shaped end portion 22 which is adapted to contact with said fianged portion of the keeper before Ithe jointed ends -of the arms reach a dead center, thereby avoiding the necessity lof breaking the joint at the meeting ends of the arms, since the 'outer end portion of each arm will come into contact with the flanged portion of its respective keeper,`thus constituting a stop to limit the inward movement ,of the inner sash.

The outer Iface of the upper end cross bar 23 of each inner sash is provided with a transverse groove 24, which terminates near each side thereof, and communicates with a longitudinal groove 24, formed in the inner rabbet of the outer face in each side rail of each inner sash, said groove 24 terminating at the lower end of the vinner sash, and connecting with a groove 25, formed within the inner face of the lower rail of both the upper and lower outer sashes whereby a drainage chamber or outlet is formed at the bottom portion of both the upper and lower sashes for the discharge of all'moisture, which may be forced inbetween the inner and outer sashes, from said chamber tothe outer side of the window, said drainage chamber, in-connection with the ybeveled inner faces of the inner and outer sash frames forming a substantially weatherproof window.

Formed within the upper cross rail-of p lower portion of the inner sash, said bolt 30 y suitable recess formed in the lower rail of incensi both the upper and lower outer sashes nearl each end thereof is a recesse for the recep-- near each end of said upper rail, the upper.

or flared head portion of said bolt engaging with the recessed edge portion 28, of the keeper 29, when-1 projected against said keeper, thereby taking up the slack and. forcn the inner sash into close contact with t couter sash, said keeper 29 bein iixedly secured in a suitable recess 'forme withinthe inner face ofthe outer sash top rail.

The lower portion of each side rail of the inner sash is provided witha laterally movable slidable securing bolt 30 adaptedjfto be projected within a recess formed in the inner face of the side rail of'each outer sash and to each of said side rails of ,the outer sash is suitably and iixedlyV secured a keeper 31 with a horizontally elongated slotted opening 32 which is engaged bythe bolt 30, and permits a ylimited inward swinging movement of the at the same time serving to 'lockthe inner .and outer sashes together to prevent any one on the outside 'from lifting the inner sash' from the outer sash, since the bolt can be operated only from the inside., and when the said bolt is moved outward from engagement with its keeper the inner s'ash may be easily removed for the purpose of cleaning the pane, or for any other purpose desired. J

The central portion of the upper sash rail of the lower outer sash is provided withan opening therethrough for, the reception of a suitable bolt 33 which isadapted to enter a the upper outer sash whereby thev meeting rails of the sashesare securely locked together in close contact. The meetin lrail sash lock is shown and claimed lin atent No. 1,346,677, granted to me July 13, 1920, on an application tiled by `meDecember 2, 1919, serial No. 341,905.

By reference to Figs. 1,v 2 and 5 of the drawings it will be seen that each spring locking bolt 26 carried by the top rail of the inner upper sash is provided with a depending chain having at' its lower end a ring 26",

-whereby said locking bolt may be easilyv extracted and the inner sash swung inward-to any suitable extent while to the lower end that an ornamental cord or rope of any desirable type or construction, preferably provided witha ring at its lower end, may be utilizedor the purpose stated. v

When it is desired to ventilate the rooms of a house during its vacancy,it is simplyv necessary to lock 4the* meeting rails of the sashes together by means of, the locking bolt 33, then by a downward and inward pressure onthe vrings suspended from each locking bolt 26 unlock each bolt, and swing its inner sash. inward to any desired extent, thereby providing the desired ventilation during absence from'the premises, and since each inner sash is locked to the outer sash near its bottom portion by the locking bolts 30 which can only be operated from the inside, the entrance of unauthorized persons by means 'of the windows is thereby absolutely prevented, and when the weather is extremely warm and it is desired to obtain a 'full volurne of the outside atmosphere within the room itis .simply necessary to remove both inner sashes thereby leaving substantially an unobstructed area within the window frame for the ingress of air without any interference whatever with the ordinary wire gauze screen usually secured to the outer face oi" the window frame.l

`When it 1s desired to remove the inne "up er sash for the purpose of cleaning or repairs, the lower sash is elevated to contact.

the locking bolts is clear of the lower rail of the lower outer sash and the bolts are then extracted; the inner sash is swung inward,- and each pivoted locking latch 15 carried by thearrn 11 is disengaged from its respective pin 12, and each arm 11 detached from said pin;' the locking bolts 30 then being eX- tracted from the outer sash frame, the inner sash becomes entirely released and may be readily removed to a suitable position within the room for the desired purpose, and when it isdesired to replace the inner sash the operation is'readily accomplished by placing the" lower rail of the inner sash upon the bottom rail of the outer'sash, then' slidingv each of the locking bolts 30 into engagement with the outer sash, then passing the perforation in each of the arms ll over the respective pins 12 into engagement therewith,

.and pressing each pivoted locking latch 15 over the outer face of the arm 11`and into engagement with the slotted portion 14 of said pin 12, when the said inner sash may be swung into its closed position into close contact with the outer sash and securely locked thereto by the locking bolts 26 intli'e lmanner hereinbeore described. Both the upthe beveled portions 'and grooves of the sashes serve to perform a smooth, easy and gradual contacting eiii'ect thereby avoiding alltendency of breaking the glass paneor panes carriedby the inner sash0 Further, the groove terms a small chamber in the outer face of the top rail oi the inner sash, and in each side rail, and the groove formed in the innery tace of the bottom rail of the outer sash coacts with thel curved formation at the lower edge of the inner sash to form an enlarged air and drainage chamber, and since this chamber is in comlmunicationwith said grooves it serves to collect all the moisture therein, whence it is discharged along the" beveled tace 5 to the outside of the window. v

It will also be seen that the foldable arms connected to a keeperxedly secured to the side rails of each of the outer and inner sashes, are so constructed and arranged thatl when the inner sash rest-s in its lclosed position the said arms and keepers are concealed Within the recesses formed within the side rails of each of the outer and inner sashes, res ectively. n

aving thus described my invention, what I claim and desire to secure by Letters Patent is i l. An outer sash frame, in combination with an inner sash frame vremovably and adjustably secured to the outer frame, said inner frame having a longitudinal groove formed within the outer face of its top rail terminating within said rail, and a longitudinal groove formed in the outer face of each side rail communicating with the first named longitudinal groove, and a longitudinal groove formed inthe inner face of the bottom rail of the outer sash frame communicatingwith said longitudinal grooves formed in the 'side`rails, whereby a drainage chamber is formed between the inner and outer sash frames. 4

2. An` outer sash frame with its inner edges providedy with a plurality of beveled surfaces, in combination with an inner sash frame removablyand adjustably secured to the outer frame having a plurality of complementary beveled surfaces formed on its outer edges and adapted to engage the bev- -'eled edges of the outer frame, said inner frame having a longitudinal groove formed within the outer face of its top rail terminating within said rail, and communicating w1th a longitudmal groove formed in meager the outer face of each side rail and with a longitudinal groove formed in the inner face of the bottom rail of the outer sash frame to form a drainage chamber between the inner and outer sash frames.

e 3. An outer sash frame formed with a plurality of inner rabbeted edges each having a beveled face, in combination with an inner sash frame removably and adjustably secured to the outer frame having a plurality of. complementary beveled faces adapted to engage 'with the beveled races on the outer-,frame, the top rail ofthe inner sash having a longitudinal groove formed within its outer rabbet, communicating with a. longitudinal groove` 'formed within the outer rabbet of each of its side rails, said longitudinal grooves communcating with a longitudinalgroove formed in the inner rabbet of the bottom rail of the outer sash frame, thereby forming a drainage cham ber between said inner and outer sash frames.

4. An outer sash frame, in combination with an inner sash frame, said inner sash frame having a longitudinal groove formed within the outer face of its top rail, a longitudinal groove formed within the outer face of eachl side rail communicating with said transverse groove, and a groove formed withinthe inner face, of the lower rail of the outer frame communicating with said longitudinal grooves, thereby 'forming a drainage chalnber at the lower portion of the sash frame and serving to drain all moisture to the outside of a window.

5. 1n window construction, the combination with an upper and a lower outer sash frame, of an inner sash removably and adjustably secured to each outer frame, each inner sash provided With a groove formed within the outer face of each top rail, and a longitudinal groove within the outer tace of each side rail communicating with a groove formed within the inner .i'tce of the bottom rail of each outer Jframe for forming a drainage chamber between the said inner and outer sash frames.

6. An outer sash frame, in combination with an inner sash frame removably and adjustably secured to the outer frame, the inner edges of the outer sash and the outer edges of the inner sash each being provided with a plurality of beveled faces adapted to contact with each other, a plurality ot locking bolts secured to the top rail ot themner sash, the inner headed portion of each bolt engaging with a keeper secured to the outer sash frame, and a laterally movable pivoted slidablelocking bolt carried by each side rail of the inner sash near the bottom thereof adapted to limit the inward movement of said inner sash and to lock the sashes togetherat their bottom portion:

7.1n window construction, the combination with an upper and a lower outersash 180 l -Leeaiai both the upper and lower outer sashes near each end thereof is a recesse for the recep tion of a spring bolt 26 provided with a cone-shapedihead 27, and secured to and carried by the upper rail of the inner sash near each end of said upper rail, the upper or flared head portion of said bolt engaging with the recessed edge portion 28, of thev to each of said side rails of the outer sash is suitably and iXedly secured a keeper 31 with a horizontally el-ongated slotted opening 32 which is engaged by the bolt 30, and permits a limited inward swinging movement of the lower portion of the inner sash, said bolt 30 at the same time serving to llock the innerv ,and outer sashes togethento prevent any one on the outside 'from lifting the inner sash' from the outer sash, since the bolt can be operated only from the inside, and when the -said bolt is moved outwardy Jfrom engagement with its keeper the inner sash may be easily removed for the purpose of cleaning the pane, or for any other purpose desired. v d

The central portion of the upper sash rail of the. lower outer sash is provided with an opening therethrough :forV the reception of a suitable bolt 33 which is adapted to enter a suitable recess formed in the lower rail of the upper outer sash whereby the meeting rails of the sashesare securely locked together in close contact. The meetin frail sash lock is shown and claimed in atent No. 1,346,677, granted to me July v13, 1920, on an application filed by meDecember 2, 1919, staal No. 341,905.

By reference to Figs. 1, 2 and 5 of the drawings it will be seenthat each spring locking bolt 26 carried by the top rail of the' whereby said locking bolt may be easily eX- tracted and the inner sash swung inward-to any suitable extent while to the lowerendportion of each locking bolt carried by the top rail of the inner lower sash is tted a ring 27", and each of said rings 26", and 27x may be readily grasped by the fingers for the proper and easy manipulation ot' bothinner sashes for Ventilating purposes, and while a chain is shown secured to the locking bolts 26 of the upper sash it will be understood that an ornamental cord or rope of any' desirable type or construction, preferably provided witha ring at its lower end, may be utilizedV for the purpose stat/ed.

When lit is desired to ventilate the rooms of a house during its vacancy,it is simplyl necessary to lock the* meeting rails of the sashes together by means of:l the locking bolt 33, then` by a downward and inward pressure onthe rings Suspended from each locking bolt 26 unlock each bolt, and swing its inner sash inward to any desired extent, thereby providing the desired ventilation :during absence fromthe premises, and since each inner sash is locked to the outer sashv near its boty tom portion by the locking bolts 30 which can only be operated from the inside, the entrance of unauthorized persons by means 'of the windows is thereby absolutely preencewhatever with the ordinary wire gauze screen usually secured to. the outer face of the window frame. l

When it is desired to l remove the inner' 'upper sash for the purpose of cleanlng or repairs, the lower sash is elevated tocon-tact with the upper portion of the window frame v and the upper sash is lowered into'the position shownby dot-ted lines in Fig. 2, the sashes being so constructed that when they are caused to assume the said position the upper bar or rail of the inner sash carrying the locking bolts is clear of the lower rail of the lower outer sash and the bolts are then extracted; the inner sash is swungy inward, and each pivoted locking latch 15 carried by the varm, 11 is disengaged from its respective pin 12, and each arm 11 detached from said pin; the locking bolts 30 then .being extracted from the outer sash frame, the inner sash becomes entirely released 'and may be readily removed to a suitable position within the room for the desired purpose, and when it isdesired to replace the inner sash the operati-on is readily accomplished by placing the' lower rail of the inner sash upon the bottom rail of the outer sash, then sliding each of the locking bolts 30 into engagement with the' outer sash, then passing the perforation in ea-ch of the arms 11 over the respective pins 12 into engagement therewith,

,and pressing each pivoted locking latch 15 said pin 12, when the said inner sash may be swung into lts closed position into close contact with the outer sash and securely locked thereto by the locking bolts 26 in the manner hereinbefore described. Both the upper and lower inne-r sashes are removed and replaced in the manner herein referred to.

It will be perceived that the inner edges of the outer sash and the outer edges of the inner sash frames are so beveled and grooved that in case the inner sash is swung inwardly to any degree, and should ,be caused to be slammed for any reason tofits closedposition .the beveled portions and grooves of the sashes serve to perform av smooth, easy and gradual contacting eii'ect thereby avoiding alltendency of brealing'the glass 4pane or panes carriedby the inner sash. Further, the groove forims a small chamber in the outer face of the top rail of the inner sash`v and in each side rail, and the groove formed in the inner face of the bottom rail of the outer sash coacts with the cur-ved format-ion at the lower edge of the inner sash to forni an enlarged air and drainage chamber, and

since this chamber is in communicationV with said grooves it serves to collect all the moisture therein, whence it is discharged along the beveled'face 5 to the outside of the win dow.

1t will also be seen that the foldable arms connected to a keeper iixedly secured to the side rails ot each of the outer and inner sashes, are so constructed' and arranged that when the inner sash rests in its closed posiinner frame having a longitudinal groove formed within the outer face of its top rail terminating within'said rail, and a longitudinal groove formed in the outer face of each side rail communicating with the first named longitudinal groove, and a longitudinal groove formed in the inner face of the bottom rail of the outer sash' frame communicating with said longitudinal grooves Jformed in the side'rails, whereby a drainage chamber is formed between the inner and outer sash frames. l

2. An outer sash frame with its inner edges providedwith a plurality of beveled surfaces, in Combination with an inner sash frame removably and adjustably secured to the outer frame having a plurality of complementary beveled surfacesformed on its outer edges and adapted to engage the bev- -'eled edges of the outer frame, said inner frame having a longitudinal groove Jformed within the outer face of its top rail terminating within said rail, and communicating with a longitudinal groove formed in adapted to engage with the beveled faces on the outerframe, the top rail of the inner sash having a longitudinal groove formed within its outer rabbet, communicating with a longitudinal groove Yformed within the outer rabbet of each of its side rails, said longitudinal grooves communcating with a longitudinalpgroove formed in the inner rabbet of the bottom rail of the outer sash frame, thereby forming a drainage cham ber between said inner and outer sash frames.

4. An outer sash frame, in combination with an inner sash frame, said inner sash frame having a longitudinal groove formed within the outer face of its top rail, a longitudinal groove formed within the outer face of each side rail communicating with said transverse groove, and la groove formed withinpthe inner face, ofl the lower rail of the outer frame communicating with said longitudinal grooves, thereby lforming a drainage chamber at the lower portion of the sash frame and serving to drain all moisture to the outside of a window.

5. 1n window construction, the combination with an upper and a lower outer sash frame, of an inner sash removably and adjustably secured to each outer trame, each inner sash provided with a groove formed within the outer face of each top rail, and a longitudinal groove 'within the outer face of each side rail communicating with a Groove formed within the inner ce of the bottom rail of each outer frame for forming a drainage chamber between the said inner and outer sash frames.

6. An outer sash frame, in combination with an inner sash frame removably and adjustably secured to the outer frame, the inner edges of the outer sash and the outer edges of the inner sash each being provided with a plurality of beveled faces adapted to contact with each other, a plurality of locking bolts secured to the top rail of the inner sash, the inner headed portion of each bolt engaging `with a keeper secured to the outer sash frame, and a laterally movable pivoted slidable locking bolt carried by each side rail of the inner sash near the bottom thereof adapted to limit the inward movement of said inner sash and to lock the saslies together at their bottom portion:

7.1n window construction, the combination with an upper Aand a lower outer sash 180 frame, of an inner' sash removably and adjustably secured to each outer frame, a plurality of locking bolts secured to the top rail of the inner sash, each bolt having a cone-- shaped headed portionv adapted to engage with the rec'essed edge of a keeper secured' to the outer sash frame to take up the slack between the meeting edges of said frames and force a close contact therebetween, a

horizontally elongated slotted keeper se-` cured to the` inner face of the outersash,l

and a laterally movable pivoted slidable locking bolt secured to each side rai-l of the inner sash adapted to adjustably engage said keeper to limit the inward movementjustably secredto each' outer frame, a plurality of laterally movable pivoted slidable bolts carried at the lower portion of each inner sash, each bolt being adaptedto engage a horizontally elongated slotted keeper secured to the inner face of the outer sash i frame for limiting the inward movement of the inner sash and locking the sashes together near the bottom,.'and a plurality of locking bolts, each of. said bolts having a cone-shaped headed portion andybeing secured to the top rail of ,each inner sash, the end portion ofeachlast named bolt being adapted to be forced into contact with the central recessed edge of a keeper, said keeper being secured to the top rail of the outer sash `frame, whereby the slack between the meeting edges of the sash frames is taken up thus permitting a close wedging contact of the frames at their upper ends. 9. In window construction, the combination with an outer and an inner sash frame, the inner frame being removably and adjustably secured to said outer frame,` said inner frame havin its outerv edges formed with a plurality o beveled faces ada ted to engage with complementary bevele faces formed on the innerl faces of the outer frame, the cuter edges of the top and side rails of the inner frame having formed therein communicating drainage grooves, a pluralit of locking bolts secured to the upper rail o the inner sash frame for securely locking the u per portion of the sashes together, and a piurality of pivoted slidable locking bolts secured to the bottom portion of the inner sash frame for locking thebottom portions of the frames together.

10. An outer sash frame, in combination with an inner sash frame removably and adjustably fitted in said outer frame and adaptyed to swing inward on said frame, longitudinal communicating drainage chambers formed between the meeting faces of the inner and outer sashjframes, a jointed link connection for yieldingly limiting the inward movement of' theremovable sash and for securely locking the sash frames in Contact, means for permitting the sash fra-mes to be disengaged, and means carried by said jointed link to` retain ,the removable sash in its adjusted inward position.-

11. 1n window construction, the combination'with an outer and an inner sash frame,

theinner frame -beingremovably and adjustably secured to said outer frame, and e ythe removable`sash in its adjusted inward positions.V4

12.- Inwindow construction, the combination'with an upper and a lower outer sash frame, of an inner sash removably and adjustably secured to each outer frame and adapted to swing inward on said frame, a jointed link `connection for yieldingly limiting the inward movement of the inner sash, means permanently secured to each vframe for securing each link connection thereto, means for locking the jointed links to said frames, means for releasably securing the inner sash to the outer one, means carried by said link connection to retain the inner sash in its adjusted inward position, and means formed by each link connection and adapted 'to contact with the means permanently secured to each frame to limit the inward movement of said removable sash.

13. vIn window construction, the combina.-

tion with anv upper and a lower outer sash frame, of an inner sash removably and adjustably secured to each outer 1 frame, aQ-,j

a pluralityof locking bolts carried by the upper rail of each inner sash, a plurality o slidable 'pivot bolts carried by the lower lportion of said inner sash, the inner. ed eof the outer frame and the outer edge of t e .inner sash .frame being provided with a plurality oi-b'eveled1,faces and adapted tov engage each otherwith an easy and gradual contacting effect thereby preventing accidental breakage. of the window panes when the inner sash is pushed into the closed position.

HERMAN P. PORTER. 

